Lake Cook Road over Slough E. of Rand RD
PoorCook County, Illinois · .5 M. E. of Rand Rd. · Structure no. 016320500000000
- Built
- 1981
- 44 years old
- Condition
- Poor
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 1,317 ft
- 18 main spans
- Daily traffic
- 39,900
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Lake Cook Road over Slough E. of Rand RD is a prestressed concrete stringer/multi-beam or girder carrying Lake Cook Road over Slough E. of Rand RD in Cook County, Illinois. It was built in 1981, so it is 44 years old, younger than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 39,900 vehicles a day, roughly 8% of them trucks, projected to reach 44,036 by 2046. The structure is 1,317 ft (401.5 m) long and 68 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Lake Cook Road over Slough E. of Rand RD built?
It was built in 1981, making it 44 years old in 2025.
What condition is Lake Cook Road over Slough E. of Rand RD in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.
How much traffic does Lake Cook Road over Slough E. of Rand RD carry?
About 39,900 vehicles per day (2022 count), of which roughly 8% are trucks.
How long is Lake Cook Road over Slough E. of Rand RD?
The structure is 1,317 ft (401.5 m) long with a longest span of 73 ft (22.3 m) and a deck 68 ft wide.
Who owns Lake Cook Road over Slough E. of Rand RD?
It is owned by the County Highway Agency.